<div class="gmail_quote">On Thu, Nov 19, 2009 at 8:56 AM, Mark Small <span dir="ltr"><<a href="mailto:msmall@eastlink.ca">msmall@eastlink.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div><div></div><div class="h5">On November 18, 2009 21:29:11 Paulin wrote:<br>
> On Wed, Nov 18, 2009 at 5:24 PM, Paulin <<a href="mailto:paulin@spextreme.com">paulin@spextreme.com</a>> wrote:<br>
> > On Wed, Nov 18, 2009 at 3:13 PM, Mark Greenwood<br>
<<a href="mailto:fatgerman@ntlworld.com">fatgerman@ntlworld.com</a>>wrote:<br>
> >> On Wednesday 18 Nov 2009 02:08:05 Paulin wrote:<br>
> >> > I'm been banging my head against the wall on this issue for a couple<br>
> >> > of<br>
> >><br>
> >> days<br>
> >><br>
> >> > now. I've search the thread and google for anything I can find on<br>
> >> > Audio<br>
> >><br>
> >> Out<br>
> >><br>
> >> > Of Sync and I've tried a ton things. No luck with any of it.<br>
> >> ><br>
> >> > I upgrade last week to Mythbuntu 9.10 (myth 0.22). I'm using VDPAU.<br>
> >> > Before upgrading I didn't really have this issue.<br>
> >> ><br>
> >> > When I say upgraded I basically wiped the disk and started fresh.<br>
> >> ><br>
> >> > Anyway now the Myth Recordings that are occurring seem fine. However<br>
> >><br>
> >> when<br>
> >><br>
> >> > playing back the audio and video become out of sync. I've noticed<br>
> >> > that<br>
> >><br>
> >> the<br>
> >><br>
> >> > video will attempt to slow down to let the audio catch up but it never<br>
> >><br>
> >> stays<br>
> >><br>
> >> > there. They get out of sync and evenytually get really bad (few<br>
> >><br>
> >> seconds).<br>
> >><br>
> >> > I've tried changing the player to VLC, I also tried the suggestion on<br>
> >> > (<br>
> >><br>
> >> <a href="http://mythtvbox.blogspot.com/2006/01/fixing-mythvideos-audiovideo-sync" target="_blank">http://mythtvbox.blogspot.com/2006/01/fixing-mythvideos-audiovideo-sync</a>.<br>
> >>html )<br>
> >><br>
> >> > and put oss on the mplayer command string. I also setup XvMC per the<br>
> >><br>
> >> wiki<br>
> >><br>
> >> > page. Didn't change anything.<br>
> >> ><br>
> >> > My first question is, how do I enable extended logging on myth<br>
> >> > frontend using mythfrontend.real. I remember something about adding<br>
> >> > the<br>
> >><br>
> >> parameter<br>
> >><br>
> >> > 'playback' but not sure how to do that with mythfrontend.real.<br>
> >> ><br>
> >> > Second why is my audio/video so out of sync? How do I track down the<br>
> >><br>
> >> problem<br>
> >><br>
> >> > and fix it.<br>
> >> ><br>
> >> > Thanks<br>
> >> > steve<br>
> >><br>
> >> Have you tried enabling the setting 'Use Video As Timebase', somewhere<br>
> >> amongst the reams of setup screens, TV playback I think? I did this for<br>
> >> a similar problem, also with VDPAU, and it solved it.<br>
> >><br>
> >> Mark<br>
> >> _______________________________________________<br>
> >> mythtv-users mailing list<br>
> >> <a href="mailto:mythtv-users@mythtv.org">mythtv-users@mythtv.org</a><br>
> >> <a href="http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users" target="_blank">http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users</a><br>
><br>
> OK well here is an updated.<br>
><br>
> Use Video as time base causes the video to slow to a crawl and play really<br>
> weird. I have Enable RealTime checked, Extra Audio Buffer check ,and warn<br>
> on no audio. I'm using VDPAU SLIM.<br>
><br>
> It seems to happen mostly with recorded programs but not all. and<br>
> not consistently. When the problem occurs, I've seen the video slow down<br>
> while the audio catches up. I've also seen where the mouths talking is out<br>
> of sync with audio. Last night watching Castle and V was the worst. At<br>
> some points the video was 3 to 4 seconds out of sync. Commercial skipping<br>
> causes it to get closer.<br>
><br>
> I did see the problem watching through myth video but that wasn't too bad<br>
> (half second off).<br>
><br>
> Also processing power of the node when watching a program is about 8% CPU<br>
> usage. Commercial flagging running would spike around 70% (62% flagging).<br>
> Recording also going on. So processing wise it should be safe (2.2ghz<br>
> dual core)<br>
><br>
> So what have I tried,<br>
> Different players and player options (mplayer, vlc).<br>
> Playing the video elsewhere (copied mpg to a windows machine played fine)<br>
> Played with xorg.conf but didn't change anything.<br>
> Host of other little things here and there as I found online.<br>
><br>
> On a possible related note, I have the following issues occur and I'm not<br>
> sure if it could be hardware/configuration/or NVidia driver.<br>
> - While watching a video or recording, the screen just goes blank. Audio<br>
> continues but there is no picture. Like the TV lost the signal. I have to<br>
> restart GDM to get it back up.<br>
> - Sometimes after restarting GDM it comes back up and the entire picture is<br>
> distored. Like each line (pixel row) is skewed (if that is the best<br>
> description) so the entire picture is impossible to determine. At one<br>
> point I went to the desktop and popped up the NVidia config. It looked<br>
> like normal but if I moved it, it became pixellated (like using photoshop's<br>
> noise feature).<br>
><br>
> So any ideas or ways to fix this. I didn't have these issue in the Myth<br>
> 0.21 that I built from trunk. So I think everything (hardware) should be<br>
> fine.<br>
><br>
> I'm desperate and frustrated so I'm willing to try any ideas to fix this.<br>
><br>
> Thanks<br>
> steve<br>
<br>
</div></div>I've also been seeing audio sync issues. The weird thing is that it only<br>
seems to happen on ABC programs (Ugly Betty, Flashforward). This doesn't<br>
make sense to me since I'm recording analog on a PVR250. The station<br>
shouldn't make a difference, unless its a source issue.<br>
<br>
This may be a completely different issue to yours.<br>
I'm still running 0.21. I'm recording through a Motorola STB on an analog<br>
channel with Composite output from the box. I haven't done any investigating<br>
or changed any settings yet.<br>
<div><div></div><div class="h5"><br>
Mark<br>
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<br>
</div></div></blockquote></div><br><div>OK I think I figured it out. At least one of hte videos that was really bad I got to play perfectly last night.</div><div><br></div><div>By chance I was playing around with Playback Profiles and remember I had to use a specific deinterlace. Then I had the problem of not remember what I did use. Luckly I dug up this (<a href="http://www.gossamer-threads.com/lists/mythtv/users/365162?search_string=High%20X%20server%20load.%20Why%3F;#365162">http://www.gossamer-threads.com/lists/mythtv/users/365162?search_string=High%20X%20server%20load.%20Why%3F;#365162</a>). It talked all about what I had. Once setting this (and I did some of the stuff on the VDPUA page - <a href="http://www.mythtv.org/wiki/VDPAU#Troubleshooting">http://www.mythtv.org/wiki/VDPAU#Troubleshooting</a>) it was playing great.</div>
<div><br></div><div>Thanks for the help. Now onto the next problem (screwed up video everyone once in a while).</div><div><br></div><div>steve</div><div><br></div>